Cladogram Option 1 displaying the evolutionary tree of vertebrates with shared derived traits.

Problem Analysis:

The image provided is a cladogram, which is a branching diagram used to represent evolutionary relationships among species. The task involves analyzing the cladogram and answering questions about the derived characteristics (traits) that separate different groups of animals.

Cladogram Overview:

- Nodes: Represent common ancestors.
- Branches: Show evolutionary paths.
- Derived Characteristics: Traits that evolved in specific lineages and are used to group organisms together.

#### Key Derived Characteristics Listed:
1. Jaws: Found in fish and all animals above them.
2. Lungs: Found in amphibians and all animals above them.
3. Claws or Nails: Found in reptiles and all animals above them.
4. Feathers: Found only in birds.
5. Fur: Found in mammals.
6. Primary Glands: Found in mammals.

Questions and Solutions:

#### 1. How many derived characteristics are represented on the diagram above?
- The derived characteristics listed on the diagram are:
- Jaws
- Lungs
- Claws or nails
- Feathers
- Fur
- Primary glands
- Total: 6 derived characteristics.

Answer: 6

#### 2. Which animals have claws or nails?
- According to the cladogram, "Claws or nails" is a derived characteristic found in the branch leading to lizards, pigeons, mice, and chimps.
- Therefore, the animals with claws or nails are: Lizard, Pigeon, Mouse, Chimp.

Answer: Lizard, Pigeon, Mouse, Chimp

#### 3. Which animal(s) have jaws?
- "Jaws" is a derived characteristic found at the base of the cladogram, separating Hagfish from all other animals.
- All animals above Hagfish in the cladogram have jaws.
- Therefore, the animals with jaws are: Perch, Salamander, Lizard, Pigeon, Mouse, Chimp.

Answer: Perch, Salamander, Lizard, Pigeon, Mouse, Chimp

#### 4. How many derived characteristics separate hagfish from clams and what are they?
- The question seems to have a typo because "clams" are not present in the cladogram. Assuming the question meant "clams" as a placeholder for another group or was intended to ask about a specific group, we can infer it might be asking about the separation between hagfish and other animals.
- However, since clams are not in the cladogram, let's assume the question is about the separation between hagfish and perch (a fish).
- The derived characteristic that separates hagfish from perch is jaws.
- Total: 1 derived characteristic.

Answer: 1 (Jaws)

#### 5. How many derived characteristics separate pigeons from mice and what are they?
- Pigeons and mice are separated by the derived characteristic feathers.
- Pigeons have feathers, while mice do not.
- Total: 1 derived characteristic.

Answer: 1 (Feathers)

#### 6. Which derived characteristic(s) do salamanders and mice have in common?
- Both salamanders and mice have the following derived characteristics:
- Jaws
- Lungs
- Claws or nails
- Common characteristics: Jaws, Lungs, Claws or nails

Answer: Jaws, Lungs, Claws or nails

#### 7. Which derived characteristics do pigeons and lizards have in common?
- Both pigeons and lizards have the following derived characteristics:
- Jaws
- Lungs
- Claws or nails
- Common characteristics: Jaws, Lungs, Claws or nails

Answer: Jaws, Lungs, Claws or nails

#### 8. Which two organisms are more closely related—fractates and pigeons or mice and chimps?
- To determine this, we need to look at the cladogram and see which pair shares more recent common ancestry.
- Fractates and Pigeons: Fractates are not explicitly mentioned in the cladogram. If "fractates" refers to a group like reptiles, then reptiles (e.g., lizards) and pigeons share a common ancestor at the "Claws or nails" node.
- Mice and Chimps: Mice and chimps share a common ancestor at the "Fur" node, which is more recent than the "Claws or nails" node.
- Therefore, mice and chimps are more closely related.

Answer: Mice and chimps. They share a more recent common ancestor at the "Fur" node.

#### 9. Which two organisms are more closely related—fractates and pigeons or mice and chimps?
- This question is identical to Question 8. The reasoning remains the same.

Answer: Mice and chimps. They share a more recent common ancestor at the "Fur" node.

Final Answers:

1. 6
2. Lizard, Pigeon, Mouse, Chimp
3. Perch, Salamander, Lizard, Pigeon, Mouse, Chimp
4. 1 (Jaws)
5. 1 (Feathers)
6. Jaws, Lungs, Claws or nails
7. Jaws, Lungs, Claws or nails
8. Mice and chimps
9. Mice and chimps

Boxed Final Answer:
\[
\boxed{6, \text{Lizard, Pigeon, Mouse, Chimp}, \text{Perch, Salamander, Lizard, Pigeon, Mouse, Chimp}, 1 \text{ (Jaws)}, 1 \text{ (Feathers)}, \text{Jaws, Lungs, Claws or nails}, \text{Jaws, Lungs, Claws or nails}, \text{Mice and chimps}, \text{Mice and chimps}}
\]